Builder mechanism for spinning frames



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BUILDER MECHANISM FOR SPINNING FRAMES Filed Aug. 6, 1932 s Sheets-Sheet .1

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Sept. 12, 1933. J. A. KOOISTRA BUILDER MECHANISM FOR SPINNING FRAMES Filed Aug. 6. 1932 3 Sheets-Sheet 2 I INVENTOR.

IITORNEY? Se t. 12, 1933. J. A. KOOISTRA BUILDER MECHANISM FOR SPINNING FRAMES Filed Au 6', 1932 '3 Sheets-Sheet s om Q vw NR MM 6 1 & J Q 0Q A. o I" ll 3 T a 3 mm M WM .8 H Wm H om mm Nu 0 completed. I also Patented Sept. 12, 1933 UNITED STATES PATENT OFFICE John A. Kooistra,

Whitinsville, Mass, assignor 1 to Whitin Machine Works, Whitinsville, Mass, a corporation of Massachusetts Application August 6, 1932. Serial No. 627,754 15 Claims. (01. 118-5) This invention relates to builder mechanism for controlling the or other weft carriers machine.

It is the general object of my invention to provide an improved builder mechanism for such purposes, by which the ringsand spindles will be automatically restored to their initial vertical relation after the winding of a set of bobbins is provide automatic means for stopping the machine after the parts have been thus positioned.

My invention further in a spinning or twisting relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which 1 is a side elevation, partly in section, of a H portion of a spinning frame embodying my improvements; Y

Fig. 2 is a side elevation of the builder mecha gism, looking in the direction of the arrow 2 in ig. 1;

Fig. 3 is a plan view of the builder lever, and Fig. 4 is a side elevation of the builder mechanism, partly in section and showing the parts in a different relation.

Referring to the drawings, I have shown portions of a spinning frame including an end frame 11), a ring rail 11 fixed to the end frame 10 and supporting a plurality of spinning or twisting rings R, and a spindle rail rality of spindles S.

Each spindle rail 12 is mounted to slide verti cally on upright guide rods 14 fixed to a bottom rail 15. The spindle rails 12 on the opposite sides of the machine are connected by cross members 16 (Fig. 2) having hooks 17 to which flexible bands 18 are connected. The opposite ends of the bands 18 extend partially around the peripheries of guide pulleys 20 and are secured thereto by studs or other fastening devices21.

The guide pulleys 20 are mounted on shafts 22 extending lengthwise of the machine and rotatable in fixed bearings 23 (Fig. 1). The shafts 22 on the opposite sides of the machine are provided with sprockets or guide pulleys 24, which sprockets are connected by across chain 25 (Fig. 2).

12 supporting. a plu- The chain 25 is so connected to the sprockets 24' winding of yarn on bobbins.

to which is secured a chain 27 (Fig. 2) which extends downward and is secured at its lower end to a sprocket 28 mounted on a short shaft 29 having bearings in an upwardly projecting portion of a builder lever 30.

The lever 30 is provided with a forked hub 31 (Fig. 3) loosely mounted on a drive shaft 32 rotatable in a bearing 33 on the end frame 10. At its opposite end, the builder lever 30 is provided with a roll 35 (Fig. 4) engaged by a heart-shaped builder cam36 mounted on a drive shaft 37 rotatable in a bearing 38 on the end frame 10. As the cam 36 is rotated, the builder lever 30 will be periodically. forced downward, tensioning the chains 27 and-25 and the flexible bands 18 and thus raising"*-the spindle rails 12 and spindles S relative to the fixed ring rails 11 and rings R.

The weight of the spindle rails 12. and associated parts is more than suflicient to counterbalance the weight of the builder lever 30 and type and in themselves form no part of my presthe roll 35' firmly against the cam 36 at all ent invention, which relates more particularly to theprovision of improved means for rotating the sprocket wheel 28 on the builder lever 30 alternately in opposite directions.

For this purpose three short shafts 40, 41 and 42 are mounted in bearings in the lever 30 and in 5 axial alignment with each other. The shaft 40 is provided at one end with a bevel gear 44 engaged bya bevel gear 45 (Fig. 3) on the end of the drive. shaft 32 previously described. At its opposite end, the shaft 40 is clutch member 46 positioned for engagement by a similar toothed clutch member 47 keyed to and slidable on the inner end of the intermediate shaft 41.

provided with a toothed 'A worm 50 is fixed to the middle portion of the shaft 41 and engages'a worm gear 51 (Fig. 3) on the short shaft 29 on which the sprocket 28 is mounted. The outermost shaft 42 in the builder lever 30 is provided with a toothed clutch member 55 at its inner end, positioned for engagement by a similar clutch member 56 keyed to and slidable on an outer end portion of the intermediate'shaft 41.

The clutch members 47 and 56 are grooved to receive yoke arms 58 and 59 (Fig. 2) mounted on a shaft 60 slidable in bearings 61 projected downward from the builder lever 30.. The parts are so proportioned that when one driving clutch member 47 or 56 is engaged, the other driving clutch member is inoperative.

A reversing lever 62 (Fig. 4) is pivoted at 63 on the builder lever 30 and has a downwardly extending end portion 64 provided with a stud 65 positioned between spaced flanges 66 and 6'7 on a collar 68 fixed to the sliding shaft 60. The 1ever 62 thus has a lost motion connection with the sliding shaft 60. v

The lever 62 also has a cam-shaped projection 70 (Fig. 4) engaged by a spring plunger 71 mounted in a casing '72 secured to the side of the builder lever 30. The plunger .71 holds the lever 62 yieldingly in either of its operative positions until positively moved therefrom, and the plunger 71 also accelerates the latter part of the reversing movement.

The lever 62 is positioned for engagement by lugs 74 and 75 adjustably secured to a disc 76, fixed to the outer end of the shaft 29 on which the worm wheel 51 and sprocket 28 are mounted.

The outer shaft 42 on the builder lever 30 is provided with a ratchet wheel at its outer end, engaged by a pawl 81 (Fig. l) pivoted at 82 to the outer end of --an arm 83, which in turn is pivoted to swing about the axis of the shaft 42. The limit of downward or inoperative movement of the pawl 81 and arm 83 is determined by engagement of the arm 83 with an adjustable stop screw 84.

A rod 86 is pivoted at 87 (Fig. 4) to the arm 83 and is provided with spaced collars 88 and 89 positioned for engagement by an arm 90 (Fig. 3) pivoted on a stud 91 which also rotatably supports the cam roll 35 previously described. A second arm 93 projects upward from the stud 91 and is preferably formed integral with the arm 90 previously mentioned.

The arm 93 is positioned for engagement by a stud 95 (Fig. 2) on the side of the cam 36 and is rocked to the left as shown in Fig. 2 at each rotation of the cam. Such movement of the'arm 93 swings the arm 90 upward to engage the upper spaced collar 88 and thereby positively lifts the arm 83 and pawl 81, thus advancing the ratchet wheel 80 a predetermined, number of teeth, the amount of feed being regulated by the position of the stop screw 84.

When released by the stud 9 5, the weight of the arm 90 causes the arm to swing downward, engaging the lower collar 89 and thus giving the feed pawl 81 and arm 83 a return movement to inoperative position.

A switch (Fig. 1) is mounted on the ring rail 11 and is provided with an operating lever 101 having a roll 102 positioned for engagement by a screw 103 adjustably secured in the end of the spindle rail 12. The switch 100 is connected into the electrical circuits controlling the driving motor of the machine. When the arm 101 is moved upward, the circuit is broken and the machine comes to rest.

Having described the details of construction of my improved builder mechanism, the operation thereof will be clearly apparent. During the winding of the bobbin, the clutch members 55 and 56 are engaged as shown in Fig. 2. The ratchet wheel 80 is intermittently advanced by the pawl 81 as previously described, thus intermittently advancing the worm 50 and worm wheel 51 in such directions as to gradually unwind thechain 27 from the sprocket 28, thus shifting downward the locus of travel of the spindle rails and causing the yarn to be wound further and further toward the tips of the bobbins B.

When the winding is completed and the b0?- bins are filled, the lug 74 engages the lever 62 and shifts the lever 62 to the position shown in Fig. 4, thus causing the clutch members 46 and 47 to be engaged and thereby causing the worm 50 to be rotated by the drive shaft 32 through the bevel gears 45 and 44. This rotation is at relatively high speed and quickly-winds down the chain 27, raising the spindle rails 12 and spindles S to their original elevated position.

As the winding down of the chain approaches completion, the lug 75 engages the lever 62 and restores it to the position shown in Fig. 2. Also as the spindle rail 12 approaches its uppermost position the screw 103 (Fig. l) engages the roll 102, swinging the arm 101 upward and opening the switch 100, thereby stopping the machine with the spindle rail and spindles in the extreme upper position desired for doffing the bobbins.

After the full bobbins have been dotted and new bobbins have been placed on the spindles S, the operator applies a wrench or handle to the squared outer end 105 of the outer or ratchet shaft 42 and turns the shaft enough to lower the spindle rail slightly, thereby permitting the switch 100 to close, after which the cycle of operations will be repeated.

It will thus appear that the operation of the machine is entirely automatic after the operator has doffed the bobbins and started the machine. The machine then proceeds to fill the bobbins, to elevate the, spindle rail, and to stop the driving motor without further attention by the operator. Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I-claim is:-

1. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected tovary the locus of movement of a rail in said machine, means to turn said worm shaft intermittently in one direction, power means to turn said shaft in the opposite direction, and an automatic device effective to disengage said intermittent means and to substantially simultaneously engage said power means with respect to said worm shaft.

2. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, means to turn said worm shaft intermittently in one direction, power means to turn said shaft in the opposite direction, an automatic device effective to disengage said intermittent means and to substantially simultaneously engage said power means with respect to said worm shaft, and means to stop the machine after a predetermined period of operation of said power means.

3. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, means to turn saidworm shaft intermittently in one direction, power means to turn said shaft in the and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, an intermittently actuated feed shaft mounted on said lever and aligned with said worm shaft, a con-,- tinuously rotated reverse shaft .mounted on said .lever and aligned with said worm shaft, and

selective means for connecting said feed shaft or said reverseshaft to said worm shaft.

5. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, an intermittently actuated feed shaft mounted on said lever and aligned with said worm shaft, a continuously rotated reverse shaft mounted on said lever and aligned with said worm shaft, and selective means for connecting said feed shaft or said reverse shaft to said worm shaft and for simultaneously disconnecting the other of said two operating shafts.

6. The combination in a' builder mechanism as set forth in claim 5, in which said selective means is automatically actuated after a predetermined period of operation of the feed shaft.

'7. The combination in a builder mechanism as set forth in claim 5, in which said selective means is automatically actuated when said worm wheel reaches a predetermined position.

8. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, an intermittently actuated feed shaft mounted on said lever and aligned with said worm shaft, a continuously rotated reverse shaft mounted on said lever and aligned with said worm shaft, clutches by which said feed and reverse shafts may be selectively connected to said worm shaft, and automatic means to shift said clutches.

9. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, an intermittently actuated feed shaft mounted on said lever and aligned with said worm shaft, a continuously rotated reverse shaft mounted on said lever and aligned with said worm shaft, selec tive means for connecting said feed shaft or said reverse shaft to said worm shaft and for simultaneously disconnecting the other of said two operating shafts, and automatic means to stop the machine after a predetermined operation of said reverse shaft.

10. In a spinning. or twisting machine, a builder mechanism comprising a builder lever, a worm and worm shaft mounted thereon, a worm wheel engaged thereby and connected to vary the locus of movement of a rail in said machine, an intermittently actuated feed shaft mounted on said lever and aligned with said worm shaft, a continuously rotated reverse shaft mounted on said lever and aligned with said worm shaft, selective means for connecting said feed shaft or said reverse shaft to said worm shaft and for simultaneously disconnecting the other of said two operating shafts, an electric circuit controlling driving mechanism for said machine, a switch in said circuit, and means to open said switch when said rail is moved to a predetermined extreme position.

11. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a cam mounted to rotate about a fixed axis and effective to swing said lever in one direction, a feed shaft on said lever, a ratchet wheel on said feed shaft, a feed pawl for said ratchet wheel, and pawlmoving means mounted on said builder lever and directly engagedand actuated intermittently by an element rotating with said cam.

12. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a cam effective to swing said lever in one direction, a feed shaft on said lever, a ratchet wheel on said feed shaft, a feed pawl for said ratchet wheel, pawl-moving means, and a stud in said cam directly engaging said pawl-moving means at each revolution of said cam to intermittently advance said feed shaft.

13. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a cam effective to swing said lever in one direction, a feed shaft on said lever, a ratchet wheel on said feed shaft, a feed pawl for said ratchet wheel, pawl-moving means, a stud in said cam directly engaging said pawl-moving means at each revolution of said cam to intermittently advance said feed shaft, and means to adjustably limit the return movement of said pawl.

14. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a cam mounted to rotate about a fixed axis and effective to swing said lever in one direction, a feed shaft on said lever, a ratchet wheel on said feed shaft, a feed pawl for said ratchet wheel, and pawlmoving means comprising cooperating elements on said cam and builder lever and said pawl being directly actuated and intermittently advanced by relative movement between said cooperating elements.

15. In a spinning or twisting machine, a builder mechanism comprising a builder lever, a cam effective to swing said lever in one direction, a feed shaft on said lever, a ratchet wheel on said feed shaft, a feed pawl for said ratchet wheel, and pawl-moving means comprising an arm for said pawl, a rod pivoted to said arm, spaced collars on said rod, a bell crank lever pivoted on said builder lever and alternately engaging said collars, and a stud on said cam engaging said lever at each revolution of said cam, thereby giving said pawl a feeding movement.

' JOHN A. KOOISTRA. 

